Stretch

Quasi

Alex spent the next half hour or so catching her breath and resting, naked and sweating, as she awaited for a Quasi to enter the room. Andrew left, his part was finished, but not before he and Alex made out, kissing passionately and caring for each other before they parted ways forever. Unless, that is, she would want to return and experience this again. In his parting words he informed her the Onyxatine should be kicking in soon.

There were loud thuds - footsteps? - before the opposite wall opened, its doors sliding apart slowly. She stood up from the floor, her skin tingling slightly. A large creature entered the room, unlike any Earthly creature Alex had ever laid eyes on. It was tall, maybe eight feet. A blob of sorts, but with two large green eyes and a big tongue that slumped out of its mouth which grunted as it moved towards her. Tentacles, as many as sixteen along with countless skinny ones following it and coming from its back. And finally, an impressive penis extending from its middle, several inches thick and at least a foot and a half in length, her pussy dampened at its sight.

She approached it, speechless, unsure of what to say if anything at all. A single tentacle moved towards her and caressed her face, moving downward and softly felt her breasts and skin. Another tentacle reached towards her and the two played with her nipples until they were erect and sensitive. 

One of the tentacles wrapped itself around her stomach and lifted Alex into the air, the other wrapping gently around her neck before sliding into her open mouth. She sucked on its sweet skin, moaning onto it. Her muscles relaxed from the drug, the tentacle easily sliding deep down her throat before coming back up and repeating this motion many times. 

Many other arms floated around her, some touching her soft skin. Two wrapped around her legs and gentle pulled them apart from each other, exposing more her wet pussy to the gigantic beast. Her mouth became free of the tentacle before a large thick one approached her vagina. It sat there carefully rubbing against her before pushing itself onto and finally into her. "Oh, god..." Alex moaned, throwing her head back. It moved in deeper, stretching her out and penetrating her deeply. "Fuck... So big... so..." It began thrusting itself into her, one big push at a time before slowly retracting itself. "So deep..." Alex could feel her insides stretching as the creature pushed far into her, allowing for an amount of cock she's never taken before. "Oh fuck, oh fuck! Yes! Keep going... Yes..." The tentacle fucked her pussy faster, each time getting a bit further into her. 

Eventually, Alex noticed a bump coming from her stomach area. As the beast filled her she could see and feel it poke out. "Oh... shit..." she groaned and moaned. Her eyes rolled back as she took the huge cock, her hand unconsciously moving to touch her clitoris so she can rub herself as well. Before she could get there, a skinny tentacle suctioned itself onto her clit sucking it repeatedly. She moaned, almost crying from pleasure, as the other tentacle still around her neck reentered her mouth and throat. Alex's moans and cries were stifled and many gags took their place. 

Alex was now filled with alien cock. Her pussy was hot and dripping and she could feel every rhythmic movement of the thick tentacle inside her and stretching her to accommodate its size. A tightness around her neck, she also felt the stretching of her throat to fit the other tentacle which moved down into her and then slowly out just enough for her to take big gulping breaths before it traveled back down her esophagus and staying there for many seconds at a time. It wasn't long before she tensed up tightly again and shook and spasmed with orgasmic pleasure. Her eyes rolled back into her head again, her arms flailing as they looked for something in the air to grab onto. She squealed and as the tentacle in her mouth exited she clenched her teeth and grunted as hard as she could before screaming in epic delight.

The creature finished, too, its tentacles spilling its warm sticky cum all over her body and face, then pumping Alex's pussy full of its juices and slightly enlarging her stomach before setting Alex onto the floor and pulling out, allowing the opaque white liquid to spill out of her. What remained of the cum the alien released all over her already smothered skin, rubbing it into her pores. Alex, rubbing the white stuff out of the way of her nose and mouth, took quick deep breaths, still in a state of ecstasy with her pussy pulsating from orgasm. Some of the monster's cum seeped between her lips and she tasted its sweet nectar.